Electrical horn.



C. G. BAUER.

ELECTRICAL HURN.

PPLmATmN FILED Aus. x, 191s.

1,@32, l 851 mme@ my s, 1m?.

Lig/1,9 Z JI Z0 j srarns y.Paaren*fr ornron.

- i CHARLES G. BAUER, F BROOKLYN, NEW YORK.

To all 'whom t may concern.'

Be it knowi'n that I, CHARLES G. Banier',

a citizen'of the United States, resdingat Brooklyn, inthe` county of Kings and State of NewYork,-haVe invented. new anduseful' Improvements Electrica-i Horns, of which f Y the followingisa specification. This'invention relates to improvements in electrical horns and has particular application t'o a horn ofthediaphragni type.

Insearrying out the. present invention, it 1is vmy purpose to improve and simplify the general construction of electrically operated horns and to provideia horn which will be found especially useful on moto'rvehicles andforwarnmg signalsiif Y VIt is also my purpose to provide a hornof the class `described -Whioliiwill embody A comparatively fewparts and -these so ar-v rangedand; .correlated as t-o'reduee the pos! sibility of 4derangement:to Aminimum.

Vilith the vabove.andfother objects-in view,`

the invention .consists in the construction, combination and yarrangement of. parts hereinafter setforth infand' falling'Within-the scopeof the claims. j w In the accompanying drawing:-

Figure `1 is a vertical l"sectional view through a horn constructed in1 accordance Withfthe present invention? n Fig. 2'isa rear'elevatiofofthe same, the

casing beingremo-vedw 1 Fig.` 3 is a'sectionalAView*through the horn taken atright angles'to 1i i f Referring now to the drawing indetail, 1- designates a vcup-shaped casinghaving the side wall at the open end thereof formed .vitli-air cutturned flange and integral with the outer edge of the flange 2 isa circular 40 iiange 3. Arranged across the open endv of the casing 1 -isl a disk 4 having the outer edge portion seated against the flange 2 and the central port on formed with an opening 5, While arrang d` upon the outer edge portion of the disk 4 at the outer side thereof and confined within the flange 3 is a Washer 6 and resting upon thefwashcr 6 is the oixter edge portion of a circular diaphragm 7. 8 designates a circular disk having the outer edge portion offset inwardly and bearing upon the corresponding portion of the dia'- phragm 7 and passed through the outer portions of the disk 8, the diaphragm, the washer, the disk e and the flange 2 are se- @f5 curing screws or bolts 9. The disk 48 is formed centrally with a relatively large4 ELECTRCAL HORN.

Specification of Letters Patent. Patented J uly 3, 1917. i 'Application med August 1, 1916. Serial'No. 112,582. i i I openingv 10 and 'secured Within this opening and. projecting outwardly from this disk 1sA an amplifying horn v1l, while secured to the-inner face of the disk Ll is'a Amagnetic 60 coil '12 Wrapped about an annulus 13 forrning. the core of the magnet and having the. inner Wallf thereof V-shaped in cross section. Secured to the vinner side of thev diaphragm Z1-'at the vcenter thereof is anv armature 14; 65 shaped after the fashion of a frustum ofa *i cone to conform to the shape of the adjacent portion of vthe pole of the magnet. Fastened to the inner side of the disk 4 beyond the magnet is a substantiallyV U-shaped, bracket 15 and secured to the"'ce`ntr l mein,`v`l i ber ofthe braclnetlfland-projecting over" thefmagnet is a sprinv arm- 16. Fastened to one side of the spriiig'arm 16 isa diskvl 17` formed with a frusto-conical armature`75 1-8 disposed Withinithelinluence of 'the pole if 13, While fastened to the'other side ofthe,d spring arm 16 is aI disk-like plate 191 formed" with a rearwardly extending'pin 20. 21,21l

= designate bracket yarms secured to the"di sk" 4 atdiametrically opposite sides'of the magi? i net coil 12 and `fastened to one of these*- bracket arms vis one end of a spring conf to engage a contact 23 carried by such other a.rm.` The spring arm 22 normally tends toI disengage the Contact 23, and the fixed end'v of the arm is connected to one terminal ofthe magnet coil 12, While ,the remaining 90 terminal' of such magnet coil andthe con-'f f" tact 23 are adapted'to beA connectedl to the"V respective terminals of an electric circuit; including a' suitable source of 'energy "andi a switch. As long as the magnet 12 is de- 95 energized, the spring arm 1 6 under the weight of the disks 17 and 19 swings away from the magnet and the pinA 20 engages the contact arm 22 to hold the latter in engagement with the Contact 23. lNhcn the switch is closed, current flows through the magnet coil., the contact arm 22 and the contary 23, thereby energizing the coil and upon the energization of the coil, the armatures 14 and 18 are drawn toward the respective sides 105 of the core and engage each other with the `effect to vibrate the diaphragm 7 so that sound Waves may be transmitted through the horn l1. As long' as 'the magnet L2 is energized, the contact arm 22 is relieved o' 110 the influence of the -pin .20 and 4disenga es the contact 23, thereby gq:

magx'iet so that the armatures may be restored to normal position and this alternate cuergizingaud denergizing of the magnet continues as long as the switch in the cir- 5 cuit is closed. thereby vibrating the diaphragm 7 rapidly to sound the horn.

While I\ha\'c herein shown and describedl the preferred forni of my invention by Way of illustration, I wish it to be understood 10 that I do not limit or conne'myself to the precise details of construction herein -de"- scribed 'and delineated, as modification and variation inay be made Within the scope of the claims and without departing from the A spirit of the invention.

' frusto-conical shaped armature secured to said I claim: 1. A horn of the class described com risf ing a casing having an open end, a dis sei cured to the open end of sa1d casing and formed centrally with an opening, a

diaphragm having the peripheral edge thereof secured to the outer surface of said disk and i spaced apart therefrom, a magnetic coil sey [cured tothe inner side of said disk concen- "il itrically of the opening therein and havlng an annular core V-shaped in cross section, a

diaphragm'at'the .center thereof and `vlisposed Within the influence of one side of `eef Said pole, a make and break device connected l f in /ircuit with the magnet, and a f1-usteconical armature connected to saidv device 'and disposed within the iniluence of the other side of the pole of said magnet Where- 55 by the circuit of the magnet may be alternately opened rand closed automatically and the diaphragm vilcratedy rapidly.

V2. A horn of the classl described com rising a casing having an open end, a dis se- 40 cured to the open end of said -casin'g and formed centrally ivith an` opening, a diaphragm having the peripheral edge thereof secured to the ou'ter surface of said disk and ,side of said diaphragm at the thereof ands aced apart there rom and' spaced apart therefrom, a magnetic coil secured to the inner side of said disk concentrically of the opening therein and having an annular core` V-shaped in cross section, a

fuiste-conical shaped armature secured to r formed centra y with a relatively large opening, and a horn secured in the 'lastnamed opening.

3. A horn of the class described com rising a casing having an open end, a dis secured tothe open end of the said casing and formed centrally with an opening, a diaphragm having the peripheral edge thereof secured to the outer surface of said disk and spaced apart therefrom, a magnetic coil se-- cured to the inner side of the said disk. concentrically of the opening therein and having an annular core, an armature secured to said diaphragm at the center thereof and disposed Within the influence of one side of said core, a make and break device connected in circuit with said magnet, and an armature connected with said device and dis osed Within the iniiuence of the other side said core of the magnet, whereby the circuit of the magnet may be. alternatel opened and losed automatically and the iaphragm vibrated rapidly.

In testimony whereof I afiix my signature.

, CHARLES G. BAUER. 

